var navs = document.querySelectorAll('#nav > a');
for (var i = 0; i< navs.length ;i++) {
	navs[i].onmouseover = function(){
		this.style.backgroundColor ="deepskyblue"; 
		
	}
	
}
for (var j = 0; j< navs.length; j++) {
		navs[j].onmouseout = function(){
			this.style.backgroundColor = "rgba(0,170,255,1)";
			navs[1].style.backgroundColor = "deepskyblue";
		}
	}
